How to determine the territory of which country they belong to by coordinates?

Question

PHP

Hey!
We use OSM and MapBox.
Given: individual points or an array of points on the map. The coordinates of these points are known.
Question: how to return the name of the state to which they belong to the available coordinates?
Good mood to you all!

Answer 1

If you use OSM - you can try using nominatim

private function  callNominatim($dLat, $dLon, $iZoom) {
   if ($iZoom<10) 
   $iZoom=12;
    $request_url= sprintf("http://nominatim.openstreetmap.org/reverse?format=json&lat=%.6F&lon=%.6F&zoom=%01d&addressdetails=1",$dLat,$dLon,$iZoom);
   $ch = curl_init();
   curl_setopt($ch, CURLOPT_URL, $request_url);
   curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);
   curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
   $response = curl_exec($ch);
   curl_close($ch);
   return $response;
}

See response fields.
Good luck.

Answer 2

If it's more difficult ... then unload planet.osm and then unload points, paths and then count the occurrence of a point in a polygon, and for a polygon, see tags like admin_level = 1 =)